<template>
  <div class="container">
    <div class="left-board">
      <el-scrollbar class="left-scrollbar">
        <div class="components-list">
          <div
            v-for="(item, listIndex) in leftComponents"
            :key="listIndex"
            class="components-part"
          >
            <div class="components-title">{{ item.title }}</div>
            <draggable
              class="components-draggable"
              :list="item.list"
              :group="{ name: 'componentsGroup', pull: 'clone', put: false }"
              :clone="cloneComponent"
              draggable=".components-item"
              filter=".disabled"
              :sort="false"
              @end="onEnd"
            >
              <div
                v-for="(element, index) in item.list"
                :key="index"
                class="components-item"
                :class="{ disabled: element.__config__.dragDisabled }"
                @click="addComponent(element)"
              >
                <div class="components-body">
                  <i :class="element.__config__.tagIcon" />
                  {{ element.__config__.label }}
                </div>
              </div>
            </draggable>
          </div>
        </div>
      </el-scrollbar>
    </div>
    <div class="center-board">
      <div class="action-bar">
        <div class="action-bar-right">
          <el-button
            icon="icon-ym icon-ym-pc"
            :class="{ 'unActive-btn': showType != 'pc' }"
            type="text"
            @click="showType = 'pc'"
            size="medium"
            >桌面端</el-button
          >
          <el-button
            icon="icon-ym icon-ym-mobile"
            :class="{ 'unActive-btn': showType != 'app' }"
            type="text"
            @click="showType = 'app'"
            size="medium"
            >移动端</el-button
          >
          <el-button
            class="unActive-btn"
            icon="el-icon-video-play"
            type="text"
            @click="preview"
            size="medium"
            >预览</el-button
          >
          <!-- <el-button icon="el-icon-view" type="text" @click="showJson" size="medium">
          查看json</el-button>-->
          <el-button
            class="delete-btn unActive-btn"
            icon="icon-ym icon-ym-clean"
            type="text"
            @click="empty"
            size="medium"
            >清空</el-button
          >
        </div>
      </div>
      <el-scrollbar class="center-scrollbar" v-show="showType === 'pc'">
        <el-row class="center-board-row" :gutter="formConf.gutter">
          <el-form
            :size="formConf.size"
            :label-position="formConf.labelPosition"
            :disabled="formConf.disabled"
            :label-width="formConf.labelWidth + 'px'"
          >
            <draggable
              class="drawing-board"
              :list="drawingList"
              :animation="340"
              group="componentsGroup"
              @end="onCenterEnd"
            >
              <draggable-item
                v-for="(element, index) in drawingList"
                :key="element.renderKey"
                :drawing-list="drawingList"
                :element="element"
                :index="index"
                :active-id="activeId"
                :form-conf="formConf"
                @activeItem="activeFormItem"
                @copyItem="drawingItemCopy"
                @deleteItem="drawingItemDelete"
                :put="shouldClone"
                :end="onTableEnd"
              />
            </draggable>
            <div v-show="!drawingList.length" class="empty-info">
              <img
                src="@/assets/images/emptyElement.png"
                alt
                class="empty-img"
              />
            </div>
          </el-form>
        </el-row>
      </el-scrollbar>
      <div id="ipad" v-show="showType === 'app'">
        <div class="outeripad">
          <div class="ipadbody">
            <el-scrollbar class="center-scrollbar">
              <el-row class="center-board-row" :gutter="formConf.gutter">
                <el-form
                  :size="formConf.size"
                  :label-position="formConf.labelPosition"
                  :disabled="formConf.disabled"
                  :label-width="formConf.labelWidth + 'px'"
                >
                  <draggable
                    class="drawing-board"
                    :list="drawingList"
                    :animation="340"
                    group="componentsGroup"
                    @end="onCenterEnd"
                  >
                    <draggable-item-app
                      v-for="(element, index) in drawingList"
                      :key="element.renderKey"
                      :drawing-list="drawingList"
                      :element="element"
                      :index="index"
                      :active-id="activeId"
                      :form-conf="formConf"
                      @activeItem="activeFormItem"
                      @copyItem="drawingItemCopy"
                      @deleteItem="drawingItemDelete"
                      :put="shouldClone"
                      :end="onTableEnd"
                    />
                  </draggable>
                  <div
                    v-show="!drawingList.length"
                    class="empty-info app-empty-info"
                  >
                    <img
                      src="@/assets/images/emptyElement.png"
                      alt
                      class="empty-img"
                    />
                  </div>
                </el-form>
              </el-row>
            </el-scrollbar>
          </div>
        </div>
      </div>
    </div>
    <right-panel
      :active-data="activeData"
      :form-conf="formConf"
      :show-field="!!drawingList.length"
      @tag-change="tagChange"
      :modelType="modelType"
      :webType="webType"
      @relationChange="relationChange"
      :drawingList="drawingList"
    />
    <json-drawer
      size="550px"
      :visible.sync="jsonDrawerVisible"
      :jsonData="formData"
      @refresh="refreshJson"
    />
    <Preview :visible.sync="previewVisible" :form-data="formData" />
  </div>
</template>

<script>
import draggable from "vuedraggable";
import { debounce } from "throttle-debounce";
import render from "@/components/Generator/render/render";
import JsonDrawer from "./JsonDrawer";
import RightPanel from "./RightPanel";
import Preview from "../preview";
import {
  inputComponents,
  selectComponents,
  systemComponents,
  layoutComponents,
  formConf,
} from "@/components/Generator/generator/config";
import {
  noVModelList,
  noTableAllowList,
  webPeculiarList,
  onlinePeculiarList,
} from "@/components/Generator/generator/comConfig";
import {
  exportDefault,
  beautifierConf,
  isNumberStr,
  titleCase,
  deepClone,
} from "@/components/Generator/utils";
import drawingDefalut from "@/components/Generator/generator/drawingDefalut";
import DraggableItem from "./DraggableItem";
import DraggableItemApp from "./DraggableItemApp";
import {
  getDrawingList,
  saveDrawingList,
  getIdGlobal,
  saveIdGlobal,
  getFormConf,
} from "@/components/Generator/utils/db";

const emptyActiveData = { style: {}, autosize: {} };
let oldActiveId;
let tempActiveData;
const idGlobal = getIdGlobal();

export default {
  components: {
    draggable,
    render,
    JsonDrawer,
    RightPanel,
    DraggableItem,
    DraggableItemApp,
    Preview,
  },
  props: ["conf", "modelType", "webType", "dbType"],
  data() {
    return {
      idGlobal: 100,
      formConf: deepClone(formConf),
      inputComponents,
      selectComponents,
      systemComponents,
      layoutComponents,
      labelWidth: 100,
      drawingList: [],
      drawingData: {},
      activeId: null,
      drawerVisible: false,
      previewVisible: false,
      formData: {},
      dialogVisible: false,
      jsonDrawerVisible: false,
      generateConf: null,
      showFileName: false,
      activeData: {},
      saveDrawingListDebounce: debounce(340, saveDrawingList),
      saveIdGlobalDebounce: debounce(340, saveIdGlobal),
      isDrawingListChange: true,
      showTip: true,
      activeItem: {},
      activeTableItem: {},
      showType: "pc",
      leftComponents: [
        {
          title: "基础控件",
          list: inputComponents,
        },
        {
          title: "高级控件",
          list: selectComponents,
        },
        {
          title: "系统控件",
          list: systemComponents,
        },
        {
          title: "布局控件",
          list: layoutComponents,
        },
      ],
    };
  },
  computed: {},
  watch: {
    // eslint-disable-next-line func-names
    "activeData.__config__.label": function (val, oldVal) {
      // if (
      //   this.activeData.placeholder === undefined
      //   || !this.activeData.__config__.tag
      //   || oldActiveId !== this.activeId
      // ) {
      //   return
      // }
      // this.activeData.placeholder = this.activeData.placeholder.replace(oldVal, '') + val
    },
    activeId: {
      handler(val) {
        oldActiveId = val;
      },
      immediate: true,
    },
    drawingList: {
      handler(val) {
        this.saveDrawingListDebounce(val);
        if (val.length === 0) this.idGlobal = 100;
        // if (!this.isDrawingListChange) {
        //   this.isDrawingListChange = true
        //   return
        // }
        this.$emit("drawingListChange");
      },
      deep: true,
    },
    idGlobal: {
      handler(val) {
        this.formConf.idGlobal = val;
        // this.saveIdGlobalDebounce(val)
      },
      immediate: true,
    },
  },
  created() {
    if (typeof this.conf === "object" && this.conf !== null) {
      this.isDrawingListChange = false;
      this.drawingList = deepClone(this.conf.fields);
      Object.assign(this.formConf, this.conf);
      this.idGlobal = this.formConf.idGlobal;
      if (this.drawingList.length) this.activeFormItem(this.drawingList[0]);
    } else {
      this.drawingList = [];
      this.idGlobal = 100;
    }
    if (this.modelType == 1 || this.modelType == 6)
      this.leftComponents[1].list = [
        ...this.leftComponents[1].list,
        ...onlinePeculiarList,
        ...webPeculiarList,
      ];
    if (this.webType != 2 || this.modelType == 3 || this.modelType == 6)
      this.formConf.popupType = "fullScreen";
  },
  mounted() {
    // fix: firefox 下 拖拽 会新打卡一个选项卡
    // https://github.com/JakHuang/form-generator/issues/15
    document.body.ondrop = (event) => {
      event.preventDefault();
      event.stopPropagation();
    };
  },
  methods: {
    // 供父组件使用 获取表单JSON
    getData() {
      return new Promise((resolve, reject) => {
        if (!this.drawingList.length) {
          reject({ msg: "表单不允许为空", target: 1 });
          return;
        }
        const loop = (list) => {
          for (let i = 0; i < list.length; i++) {
            const e = list[i];
            const config = e.__config__;
            if (
              this.$store.getters.hasTable &&
              config.layout === "colFormItem" &&
              !noVModelList.includes(config.keyName) &&
              !e.__vModel__
            ) {
              reject({ msg: `请选择${config.label}的控件字段`, target: 1 });
              break;
            }
            if (config.keyName === "billRule") {
              if (!config.rule) {
                reject({ msg: "单据组件“选择模板”属性为必填项", target: 1 });
                break;
              }
            }
            if (config.keyName === "relationForm") {
              if (!e.modelId) {
                reject({
                  msg: "关联表单控件“关联功能”属性为必填项",
                  target: 1,
                });
                break;
              }
              if (!e.relationField) {
                reject({
                  msg: "关联表单控件“显示字段”属性为必填项",
                  target: 1,
                });
                break;
              }
            }
            if (config.keyName === "popupSelect") {
              // if (!e.interfaceId) {
              //   reject({
              //     msg: "弹窗选择控件“远端数据”属性为必填项",
              //     target: 1,
              //   });
              //   break;
              // }
              if (!e.propsValue) {
                reject({
                  msg: "弹窗选择控件“储存字段”属性为必填项",
                  target: 1,
                });
                break;
              }
              if (!e.relationField) {
                reject({
                  msg: "弹窗选择控件“显示字段”属性为必填项",
                  target: 1,
                });
                break;
              }
            }
            if (config.layout === "rowFormItem" && !config.children.length) {
              reject({ msg: `您的${config.label}控件中没有组件`, target: 1 });
              break;
            }
            if (config && config.children && Array.isArray(config.children)) {
              loop(config.children);
            }
          }
        };
        loop(this.drawingList);
        this.AssembleFormData();
        if (this.formData.hasPrintBtn && !this.formData.printId) {
          reject({ msg: `请选择打印模板`, target: 1 });
        }
        resolve({ formData: this.formData, target: 1 });
      });
    },
    //  阻止表格中嵌套行容器
    shouldClone(to, from, target, event, conf) {
      const targetConf = target._underlying_vm_;
      const isRowContainer =
        conf.__config__.cmpType === "common" &&
        conf.__config__.rowType === "layout";
      if (isRowContainer) return true;
      if (conf.cmpType === "custom") return false;
      if (conf.__config__.rowType === "table") {
        if (noTableAllowList.includes(targetConf.__config__.keyName)) {
          // if (this.showTip) {
          //   this.$message.warning(`子表内暂不支持使用该组件`)
          //   this.showTip = false
          // }
          return false;
        }
        if (targetConf.__config__.layout === "rowFormItem") return false;
        if (this.$store.getters.hasTable) {
          if (!conf.__config__.tableName) {
            if (this.showTip) {
              this.$message.warning(`子表请先关联数据表`);
              this.showTip = false;
            }
            return false;
          }
        }
        this.activeItem = targetConf;
        this.activeTableItem = conf;
      }
      return true;
    },
    activeFormItem(element) {
      this.activeData = element;
      this.activeId = element.__config__.formId;
    },
    onEnd(obj) {
      this.showTip = true;
      if (obj.from !== obj.to) {
        this.activeData = tempActiveData;
        this.activeId = this.idGlobal;
      }
      if (obj.to.className.indexOf("table") > -1) {
        this.$set(this.activeItem.__config__, "isSubTable", true);
        if (this.$store.getters.hasTable) {
          this.$set(
            this.activeItem.__config__,
            "relationTable",
            this.activeTableItem.__config__.tableName
          );
          this.activeItem.__vModel__ = "";
        }
      }
    },
    onCenterEnd(obj) {
      this.showTip = true;
      if (obj.from == obj.to) return;
      if (obj.to.className.indexOf("table") > -1) {
        this.$set(this.activeItem.__config__, "isSubTable", true);
        if (this.$store.getters.hasTable) {
          this.$set(
            this.activeItem.__config__,
            "relationTable",
            this.activeTableItem.__config__.tableName
          );
          this.activeItem.__vModel__ = "";
        }
      }
    },
    onTableEnd(obj, target, conf) {
      if (obj.from == obj.to) return;
      if (obj.to.className.indexOf("table") < 0) {
        this.$set(this.activeItem.__config__, "isSubTable", false);
        if (this.$store.getters.hasTable) this.activeItem.__vModel__ = "";
      } else {
        this.$set(this.activeItem.__config__, "isSubTable", true);
        if (this.$store.getters.hasTable) {
          this.$set(
            this.activeItem.__config__,
            "relationTable",
            this.activeTableItem.__config__.tableName
          );
          this.activeItem.__vModel__ = "";
        }
      }
    },
    addComponent(item) {
      if (item.__config__.dragDisabled) return;
      const clone = this.cloneComponent(item);
      this.drawingList.push(clone);
      this.activeFormItem(clone);
    },
    cloneComponent(origin) {
      const clone = deepClone(origin);
      const config = clone.__config__;
      config.span = this.formConf.span; // 生成代码时，会根据span做精简判断
      this.createIdAndKey(clone);
      // clone.placeholder !== undefined && (clone.placeholder += config.label)
      tempActiveData = clone;
      return tempActiveData;
    },
    createIdAndKey(item) {
      const config = item.__config__;
      config.formId = ++this.idGlobal;
      config.renderKey = +new Date(); // 改变renderKey后可以实现强制更新组件
      if (config.layout === "colFormItem") {
        if (!this.$store.getters.hasTable) {
          // 分割线和按钮不加vModel
          if (noVModelList.indexOf(config.keyName) < 0) {
            item.__vModel__ = this.toggleVmodelCase(
              `${config.keyName}Field${this.idGlobal}`
            );
          }
        } else {
          if (noVModelList.indexOf(config.keyName) < 0) {
            item.__vModel__ = "";
          }
        }
      } else if (config.layout === "rowFormItem") {
        if (config.keyName === "table") {
          item.__vModel__ = this.toggleVmodelCase(
            `${config.keyName}Field${this.idGlobal}`
          );
        }
        config.componentName = `row${this.idGlobal}`;
        !Array.isArray(config.children) && (config.children = []);
        // delete config.label // rowFormItem无需配置label属性
      }
      if (Array.isArray(config.children)) {
        config.children = config.children.map((childItem) =>
          this.createIdAndKey(childItem)
        );
      }
      return item;
    },
    toggleVmodelCase(str) {
      const dbType = this.dbType || "";
      if (
        dbType.toLowerCase() === "Oracle".toLowerCase() ||
        dbType.toLowerCase() === "DM8".toLowerCase()
      ) {
        return str.toUpperCase();
      }
      if (
        dbType.toLowerCase() === "PostgreSQL".toLowerCase() ||
        dbType.toLowerCase() === "KingBaseES".toLowerCase()
      ) {
        return str.toLowerCase();
      }
      return str;
    },
    AssembleFormData() {
      this.formData = {
        ...this.formConf,
        fields: deepClone(this.drawingList),
      };
    },
    empty() {
      this.$confirm("确定要清空所有组件吗？", "提示", { type: "warning" })
        .then(() => {
          this.drawingList = [];
          this.idGlobal = 100;
        })
        .catch(() => {});
    },
    drawingItemCopy(item, parent) {
      let clone = deepClone(item);
      clone = this.createIdAndKey(clone);
      parent.push(clone);
      this.activeFormItem(clone);
    },
    drawingItemDelete(index, parent) {
      parent.splice(index, 1);
      this.$nextTick(() => {
        const len = this.drawingList.length;
        if (len) {
          this.activeFormItem(this.drawingList[len - 1]);
        }
      });
    },
    preview() {
      this.AssembleFormData();
      this.previewVisible = true;
    },
    showJson() {
      this.AssembleFormData();
      this.jsonDrawerVisible = true;
    },
    tagChange(newTag) {
      newTag = this.cloneComponent(newTag);
      const config = newTag.__config__;
      newTag.__vModel__ = this.activeData.__vModel__;
      config.formId = this.activeId;
      config.span = this.activeData.__config__.span;
      this.activeData.__config__.tag = config.tag;
      this.activeData.__config__.tagIcon = config.tagIcon;
      this.activeData.__config__.document = config.document;
      if (
        typeof this.activeData.__config__.defaultValue ===
        typeof config.defaultValue
      ) {
        config.defaultValue = this.activeData.__config__.defaultValue;
      }
      Object.keys(newTag).forEach((key) => {
        if (this.activeData[key] !== undefined) {
          newTag[key] = this.activeData[key];
        }
      });
      this.activeData = newTag;
      this.updateDrawingList(newTag, this.drawingList);
    },
    updateDrawingList(newTag, list) {
      const index = list.findIndex(
        (item) => item.__config__.formId === this.activeId
      );
      if (index > -1) {
        list.splice(index, 1, newTag);
      } else {
        list.forEach((item) => {
          if (Array.isArray(item.__config__.children))
            this.updateDrawingList(newTag, item.__config__.children);
        });
      }
    },
    refreshJson(data) {
      this.drawingList = deepClone(data.fields);
      delete data.fields;
      this.formConf = data;
    },
    relationChange(vmodel) {
      const loop = (list) => {
        for (let i = 0; i < list.length; i++) {
          const config = list[i].__config__;
          if (
            list[i].relationField &&
            list[i].relationField === list[i].__vModel__
          ) {
            list[i].showField = "";
          }
          if (config && config.children && Array.isArray(config.children)) {
            loop(config.children);
          }
        }
      };
      loop(this.drawingList);
    },
  },
};
</script>
<style lang="scss">
@import "../styles/index";
@import "../styles/home";
</style>
